HADOOP-14116:FailoverOnNetworkExceptionRetry does not wait when failover

on certain exception. Contributed by Jian He

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/retry/RetryPolicies.java

@@ -683,7 +683,8 @@ public class RetryPolicies {
       } else if (e instanceof SocketException
           || (e instanceof IOException && !(e instanceof RemoteException))) {
         if (isIdempotentOrAtMostOnce) {
-          return RetryAction.FAILOVER_AND_RETRY;
+          return new RetryAction(RetryAction.RetryDecision.FAILOVER_AND_RETRY,
+              getFailoverOrRetrySleepTime(retries));
         } else {
           return new RetryAction(RetryAction.RetryDecision.FAIL, 0,
               "the invoked method is not idempotent, and unable to determine "